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Get.cpp
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Get.cpp
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#include <algorithm>
#include <fstream>
#include <iostream>
#include <unordered_set>
#include <sys/stat.h>
#include <sys/types.h>
#include <cstdarg>
#include "rapidjson/document.h"
#include "rapidjson/istreamwrapper.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/writer.h"
#include "Get.hpp"
#include "Utils.hpp"
using namespace std;
using namespace rapidjson;
bool debug = false;
Get::Get(const char* config_dir, const char* defaultRepo)
{
this->defaultRepo = defaultRepo;
// the path for the get metadata folder
string config_path = config_dir;
string* repo_file = new string(config_path + "repos.json");
this->repos_path = repo_file->c_str();
string* package_dir = new string(config_path + "packages/");
this->pkg_path = package_dir->c_str();
string* tmp_dir = new string(config_path + "tmp/");
this->tmp_path = tmp_dir->c_str();
// printf("--> Using \"./sdroot\" as local download root directory\n");
// mkdir("./sdroot", 0700);
mkdir(config_path.c_str(), 0700);
mkdir(package_dir->c_str(), 0700);
mkdir(tmp_dir->c_str(), 0700);
printf("--> Using \"%s\" as repo list\n", repo_file->c_str());
// load repo info
this->loadRepos();
this->update();
}
int Get::install(Package* package)
{
// found package in a remote server, fetch it
bool located = package->downloadZip(this->tmp_path);
if (!located)
{
// according to the repo list, the package zip file should've been here
// but we got a 404 and couldn't find it
printf("--> Error retrieving remote file for [%s] (check network or 404 error?)\n", package->pkg_name.c_str());
return false;
}
// install the package, (extracts manifest, etc)
package->install(this->pkg_path, this->tmp_path);
printf("--> Downloaded [%s] to sdroot/\n", package->pkg_name.c_str());
// update again post-install
update();
return true;
}
int Get::remove(Package* package)
{
package->remove(this->pkg_path);
printf("--> Uninstalled [%s] package\n", package->pkg_name.c_str());
update();
return true;
}
int Get::toggleRepo(Repo* repo)
{
repo->enabled = !repo->enabled;
update();
return true;
}
/**
Load any repos from a config file into the repos vector.
**/
void Get::loadRepos()
{
repos.clear();
const char* config_path = repos_path;
ifstream* ifs = new ifstream(config_path);
if (!ifs->good() || ifs->peek() == std::ifstream::traits_type::eof())
{
printf("--> Could not load repos from %s, generating default repos.json\n", config_path);
Repo* defaultRepo = new Repo("Default Repo", this->defaultRepo);
Document d;
d.Parse(generateRepoJson(1, defaultRepo).c_str());
std::ofstream file(config_path);
StringBuffer buffer;
Writer<StringBuffer> writer(buffer);
d.Accept(writer);
file << buffer.GetString();
ifs = new ifstream(config_path);
if (!ifs->good())
{
printf("--> Could not generate a new repos.json\n");
// manually create a repo, no file access
Repo* repo = new Repo();
repo->name = "4TU Switch Repo";
repo->url = this->defaultRepo;
repo->enabled = true;
repos.push_back(repo);
return;
}
}
IStreamWrapper isw(*ifs);
Document doc;
ParseResult ok = doc.ParseStream(isw);
if (!ok || !doc.HasMember("repos"))
{
printf("--> Invalid format in %s", config_path);
return;
}
const Value& repos_doc = doc["repos"];
// for every repo
for (Value::ConstValueIterator it = repos_doc.Begin(); it != repos_doc.End(); it++)
{
Repo* repo = new Repo();
repo->name = (*it)["name"].GetString();
repo->url = (*it)["url"].GetString();
repo->enabled = (*it)["enabled"].GetBool();
repos.push_back(repo);
}
return;
}
void Get::update()
{
// clear current packages
packages.clear();
// fetch recent package list from enabled repos
for (size_t x = 0; x < repos.size(); x++)
{
if (repos[x]->enabled)
{
if (libget_status_callback != NULL)
libget_status_callback(STATUS_RELOADING, x+1, repos.size());
repos[x]->loadPackages(&packages);
}
}
if (libget_status_callback != NULL)
libget_status_callback(STATUS_UPDATING_STATUS, 1, 1);
// remove duplicates, prioritizing later packages over earlier ones
this->removeDuplicates();
// check for any installed packages to update their status
for (size_t x = 0; x < packages.size(); x++)
{
packages[x]->updateStatus(this->pkg_path);
}
}
int Get::validateRepos()
{
if (repos.size() == 0)
{
printf("--> There are no repos configured!\n");
return ERR_NO_REPOS;
}
return 0;
}
std::vector<Package*> Get::search(std::string query)
{
// TODO: replace with inverted index for speed
// https://vgmoose.com/blog/implementing-a-static-blog-search-clientside-in-js-6629164446/
std::vector<Package*> results = std::vector<Package*>();
std::string lower_query = toLower(query);
for (size_t x = 0; x < packages.size(); x++)
{
Package* cur = packages[x];
if (cur != NULL && (toLower(cur->title).find(lower_query) != std::string::npos || toLower(cur->author).find(lower_query) != std::string::npos || toLower(cur->short_desc).find(lower_query) != std::string::npos || toLower(cur->long_desc).find(lower_query) != std::string::npos))
{
// matches, add to return vector, and continue
results.push_back(cur);
continue;
}
}
return results;
}
Package* Get::lookup(std::string pkg_name)
{
for (size_t x = 0; x < packages.size(); x++)
{
Package* cur = packages[x];
if (cur != NULL && cur->pkg_name == pkg_name)
{
return cur;
}
}
return NULL;
}
void Get::removeDuplicates()
{
std::unordered_set<std::string> packageSet;
std::unordered_set<Package*> removalSet;
// going backards, fill out our sets
// (prioritizes later repo packages over earlier ones, regardless of versioning)
// TODO: semantic versioning or have a versionCode int that increments every update
for (int x = packages.size()-1; x >= 0; x--)
{
std::string name = packages[x]->pkg_name;
if (packageSet.find(name) == packageSet.end())
packageSet.insert(name);
else
removalSet.insert(packages[x]);
}
// remove them, if they are in the removal set
packages.erase(std::remove_if(packages.begin(), packages.end(), [removalSet](Package* p) {
return removalSet.find(p) != removalSet.end();
}), packages.end());
}
void info(const char* format, ...)
{
if (!debug) return;
va_list args;
va_start(args, format);
vfprintf(stdout, format, args);
va_end(args);
}